readme: better repl commands

README.md

@@ -104,25 +104,24 @@ nix develop --command $SHELL
 # nix shell with python packages
 # https://discourse.nixos.org/t/nix-shell-for-python-packages/16575
 # https://github.com/NixOS/nix/issues/5567
-nix shell --impure --expr 'with builtins.getFlake "nixpkgs"; with legacyPackages.x86_64-linux; python3.withPackages (ps: with ps; [ numpy ])'
+nix shell --impure --expr 'with builtins.getFlake "nixpkgs"; with legacyPackages.${builtins.currentSystem}; python3.withPackages (ps: with ps; [ numpy ])'
 ```
 
 ### Debugging
-```bash
+```nix
 # load flake into repl
 nix repl
 :lf .
 
-# print the value of a configuration settings
-:p nixosConfigurations.omega.config.services.openssh.ports
-
-# print _why_ the value is as it is (source of defaults, overwrites)
-:p nixosConfigurations.omega.options.services.openssh.ports
-
-# print value of home-manager setting
-:p nixosConfigurations.omega.config.home-manager.users.caspervk.programs.ssh.matchBlocks
+# print a configuration option
+:p nixosConfigurations.omega.options.services.openssh.ports.declarationPositions  # declaration
+:p nixosConfigurations.omega.options.services.openssh.ports.default  # declaration default
+:p nixosConfigurations.omega.options.services.openssh.ports.definitionsWithLocations  # overwrites
+:p nixosConfigurations.omega.options.services.openssh.ports.value  # current value
+# print derivation package names
+:p builtins.map (d: d.name) outputs.nixosConfigurations.omega.options.environment.systemPackages.value
 
 # print version of package in nixpkgs
-:p inputs.nixpkgs.outputs.legacyPackages.x86_64-linux.openssh.version
+:p inputs.nixpkgs.outputs.legacyPackages.${builtins.currentSystem}.openssh.version
 ```
 

hosts/omega/hardware.nix

@@ -52,4 +52,7 @@
   networking.useDHCP = lib.mkDefault true;
 
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+
+  # nixos-hardware
+  hardware.amdgpu.amdvlk = true;
 }

modules/desktop/sway.nix

@@ -288,6 +288,7 @@
   # xdg portal allows applications secure access to resources outside their
   # sandbox through a D-Bus interface. In particular, this allows screen
   # sharing on Wayland via PipeWire and file open/save dialogues in Firefox.
+  # https://nixos.org/manual/nixos/stable/index.html#sec-wayland
   # https://wiki.archlinux.org/title/XDG_Desktop_Portal
   # https://mozilla.github.io/webrtc-landing/gum_test.html
   services.dbus.enable = true;
@@ -299,10 +300,4 @@
       xdg-desktop-portal-gtk
     ];
   };
-
-  # TODO
-  hardware.opengl = {
-    enable = true;
-    extraPackages = with pkgs; [ intel-media-driver ];
-  };
 }